diff --git a/internal/controller/bombing.go b/internal/controller/bombing.go
index d80d037..f55be31 100644
--- a/internal/controller/bombing.go
+++ b/internal/controller/bombing.go
@@ -10,18 +10,19 @@ type BombingReport struct {
 }
 
 type BombingPlanetReport struct {
-	Planet      string  `json:"name"`
-	Number      uint    `json:"number"`
-	Owner       string  `json:"owner"`
-	Attacker    string  `json:"attacker"`
-	Production  string  `json:"production"`
-	Industry    float64 `json:"industry"`   // I - Промышленность
-	Population  float64 `json:"population"` // P - Население
-	Colonists   float64 `json:"colonists"`  // COL C - Количество колонистов
-	Capital     float64 `json:"capital"`    // CAP $ - Запасы промышленности
-	Material    float64 `json:"material"`   // MAT M - Запасы ресурсов / сырья
-	AttackPower float64 `json:"attack"`
-	Wiped       bool    `json:"wiped"`
+	ID          uuid.UUID `json:"id"`
+	Planet      string    `json:"name"`
+	Number      uint      `json:"number"`
+	Owner       string    `json:"owner"`
+	Attacker    string    `json:"attacker"`
+	Production  string    `json:"production"`
+	Industry    float64   `json:"industry"`   // I - Промышленность
+	Population  float64   `json:"population"` // P - Население
+	Colonists   float64   `json:"colonists"`  // COL C - Количество колонистов
+	Capital     float64   `json:"capital"`    // CAP $ - Запасы промышленности
+	Material    float64   `json:"material"`   // MAT M - Запасы ресурсов / сырья
+	AttackPower float64   `json:"attack"`
+	Wiped       bool      `json:"wiped"`
 }
 
 func (c *Cache) bombingReport(p *game.Planet, ri int, groups []int) BombingPlanetReport {
@@ -32,6 +33,7 @@ func (c *Cache) bombingReport(p *game.Planet, ri int, groups []int) BombingPlane
 		attackPower += sg.BombingPower(st)
 	}
 	r := &BombingPlanetReport{
+		ID:          uuid.New(),
 		Planet:      p.Name,
 		Number:      p.Number,
 		Owner:       c.g.Race[c.RaceIndex(p.Owner)].Name,
diff --git a/internal/controller/bombing_test.go b/internal/controller/bombing_test.go
index 6ddbfa9..fe85f0b 100644
--- a/internal/controller/bombing_test.go
+++ b/internal/controller/bombing_test.go
@@ -121,6 +121,7 @@ func TestProduceBombings(t *testing.T) {
 	reports := c.ProduceBombings()
 	assert.Len(t, reports, 2)
 	for _, r := range reports {
+		assert.NotEqual(t, uuid.Nil, r.ID)
 		switch pn := r.Number; pn {
 		case R1_Planet_1_num:
 			assert.Equal(t, Race_1.Name, r.Owner)
diff --git a/internal/controller/generate_turn.go b/internal/controller/generate_turn.go
index 4d9a55c..ecde741 100644
--- a/internal/controller/generate_turn.go
+++ b/internal/controller/generate_turn.go
@@ -28,7 +28,10 @@ func MakeTurn(c *Controller, r Repo, g *game.Game) error {
 	battles = append(battles, ProduceBattles(c.Cache)...)
 
 	// 07. Корабли бомбят вражеские планеты.
-	_ = c.Cache.ProduceBombings() // TODO: store bombings for reports
+	_ = c.Cache.ProduceBombings()
+
+	// 08. На планетах строятся корабли.
+	c.Cache.ProduceShips()
 
 	/*** Last steps ***/
 
diff --git a/internal/controller/planet.go b/internal/controller/planet.go
index 9272491..fe3f643 100644
--- a/internal/controller/planet.go
+++ b/internal/controller/planet.go
@@ -78,11 +78,11 @@ func (c *Cache) PlanetProduction(ri int, number int, prod game.ProductionType, s
 	if p.Owner != c.g.Race[ri].ID {
 		return e.NewEntityNotOwnedError("planet #%d", number)
 	}
-	i := c.MustPlanetIndex(p.Number)
 	var subjectID *uuid.UUID
 	if (prod == game.ResearchScience || prod == game.ProductionShip) && subj == "" {
 		return e.NewEntityTypeNameValidationError("%s=%q", prod, subj)
 	}
+
 	if prod == game.ResearchScience {
 		i := slices.IndexFunc(c.g.Race[ri].Sciences, func(s game.Science) bool { return s.Name == subj })
 		if i < 0 {
@@ -90,6 +90,7 @@ func (c *Cache) PlanetProduction(ri int, number int, prod game.ProductionType, s
 		}
 		subjectID = &c.g.Race[ri].Sciences[i].ID
 	}
+
 	if prod == game.ProductionShip {
 		st, _, ok := c.ShipClass(ri, subj)
 		if !ok {
@@ -102,30 +103,24 @@ func (c *Cache) PlanetProduction(ri int, number int, prod game.ProductionType, s
 			return nil
 		}
 		subjectID = &st.ID
+	}
+
+	if p.Production.Type == game.ProductionShip && (prod != game.ProductionShip || *subjectID != *p.Production.SubjectID) {
+		mat, _ := c.MustShipType(ri, *p.Production.SubjectID).ProductionCost()
+		p.Material += mat * (*p.Production.Progress)
+		*p.Production.Progress = 0.
+	} else if prod == game.ProductionShip {
+		// new ship class to produce; otherwise we must have been returned from the func earlier
 		var progress float64 = 0.
-		c.g.Map.Planet[i].Production.Progress = &progress
-	} else {
-		c.g.Map.Planet[i].Production.Progress = nil
+		p.Production.Progress = &progress
 	}
-	if p.Production.Type == game.ProductionShip && prod != game.ProductionShip {
-		if p.Production.SubjectID == nil {
-			return e.NewGameStateError("planet #%d produces ship but SubjectID is empty", p.Number)
-		}
-		s := *p.Production.SubjectID
-		if p.Production.Progress == nil {
-			return e.NewGameStateError("planet #%d produces ship but Progress is empty", p.Number)
-		}
-		progress := *p.Production.Progress
-		st, ok := c.ShipType(ri, s)
-		if !ok {
-			return e.NewGameStateError("planet #%d produces ship but ShipType was not found for race %s", p.Number, c.g.Race[ri].Name)
-		}
-		mat, _ := st.ProductionCost()
-		extra := mat * progress
-		c.g.Map.Planet[i].Material += extra
+
+	if prod != game.ProductionShip {
+		p.Production.Progress = nil
 	}
-	c.g.Map.Planet[i].Production.Type = prod
-	c.g.Map.Planet[i].Production.SubjectID = subjectID
+
+	p.Production.Type = prod
+	p.Production.SubjectID = subjectID
 	return nil
 }
 
@@ -201,6 +196,23 @@ func (c *Cache) PlanetProductionCapacity(planetNumber uint) float64 {
 	return p.ProductionCapacity() - busyResources
 }
 
+func (c *Cache) ProduceShips() {
+	for pl := range c.g.Map.Planet {
+		p := c.MustPlanet(c.g.Map.Planet[pl].Number)
+		if p.Owner == uuid.Nil || p.Production.Type != game.ProductionShip {
+			continue
+		}
+		ri := c.RaceIndex(p.Owner)
+		st := c.MustShipType(ri, *p.Production.SubjectID)
+		ships := ProduceShip(p, st.EmptyMass())
+		if ships > 0 {
+			if err := c.CreateShips(ri, st.Name, p.Number, ships); err != nil {
+				panic(fmt.Sprintf("ProduceShips: CreateShip: %s", err))
+			}
+		}
+	}
+}
+
 // Internal funcs
 
 func (c *Cache) putPopulation(pn uint, v float64) {
@@ -230,16 +242,14 @@ func ProduceShip(p *game.Planet, shipMass float64) int {
 		if CAP_deficit := p.Capital - CAP_perShip; CAP_deficit < 0 {
 			productionExtraCAP = -CAP_deficit
 		}
-
-		ship_prod := productionExtraCAP + productionForMass
-
-		if productionAvailable >= ship_prod {
-			productionAvailable -= ship_prod
+		productionCost := productionExtraCAP + productionForMass
+		if productionAvailable >= productionCost {
+			productionAvailable -= productionCost
 			p.Capital = p.Capital - (CAP_perShip - productionExtraCAP)
 			ships++
 		} else {
-			progress := productionAvailable / ship_prod
-			productionAvailable -= ship_prod * progress
+			progress := productionAvailable / productionCost
+			productionAvailable -= productionCost * progress
 			p.Production.Progress = &progress
 			break
 		}
diff --git a/internal/controller/planet_test.go b/internal/controller/planet_test.go
index f497ea6..34bd611 100644
--- a/internal/controller/planet_test.go
+++ b/internal/controller/planet_test.go
@@ -1,6 +1,7 @@
 package controller_test
 
 import (
+	"slices"
 	"testing"
 
 	"github.com/google/uuid"
@@ -122,6 +123,41 @@ func TestPlanetProductionCapacity(t *testing.T) {
 	assert.Equal(t, 53.125, c.PlanetProductionCapacity(R0_Planet_0_num))
 }
 
+func TestProduceShips(t *testing.T) {
+	c, g := newCache()
+
+	pn := int(R0_Planet_0_num)
+	assert.NoError(t, g.PlanetProduction(Race_0.Name, pn, "SHIP", Race_0_Gunship))
+	assert.Equal(t, game.ProductionShip, c.MustPlanet(R0_Planet_0_num).Production.Type)
+	assert.NotNil(t, c.MustPlanet(R0_Planet_0_num).Production.Progress)
+	assert.NotNil(t, c.MustPlanet(R0_Planet_0_num).Production.SubjectID)
+	st := c.MustShipClass(Race_0_idx, Race_0_Gunship)
+	assert.Equal(t, st.ID, *c.MustPlanet(R0_Planet_0_num).Production.SubjectID)
+
+	c.MustPlanet(R0_Planet_0_num).Population = 1000.
+	c.MustPlanet(R0_Planet_0_num).Industry = 1000.
+	c.MustPlanet(R0_Planet_0_num).Resources = 10.
+	shipMass := st.EmptyMass()
+
+	c.ProduceShips()
+
+	assert.Len(t, slices.Collect(c.RaceShipGroups(Race_0_idx)), 0)
+	assert.NotNil(t, c.MustPlanet(R0_Planet_0_num).Production.Progress)
+	progress := *c.MustPlanet(R0_Planet_0_num).Production.Progress
+	assert.InDelta(t, 0.45, progress, 0.001)
+
+	assert.NoError(t, c.CreateShipType(Race_0_idx, "Drone", 1, 0, 0, 0, 0))
+	assert.NoError(t, g.PlanetProduction(Race_0.Name, pn, "SHIP", "Drone"))
+	assert.InDelta(t, shipMass*progress, c.MustPlanet(R0_Planet_0_num).Material, 0.00001) // 99.(0099) material build
+
+	c.ProduceShips()
+
+	assert.Len(t, slices.Collect(c.RaceShipGroups(Race_0_idx)), 1)
+	assert.Equal(t, uint(99), c.ShipGroup(0).Number)
+	progress = *c.MustPlanet(R0_Planet_0_num).Production.Progress
+	assert.InDelta(t, 0.0099, progress, 0.00001) // 1.(0099) drones with no CAP on planet
+}
+
 func TestProduceShip(t *testing.T) {
 	Drone := game.ShipType{
 		ShipTypeReport: game.ShipTypeReport{
diff --git a/internal/model/game/production.go b/internal/model/game/production.go
index 8038cc0..bfe8b77 100644
--- a/internal/model/game/production.go
+++ b/internal/model/game/production.go
@@ -22,7 +22,7 @@ const (
 
 type Production struct {
 	Type      ProductionType `json:"type"`
-	SubjectID *uuid.UUID     `json:"subjectId"`
+	SubjectID *uuid.UUID     `json:"subjectId"` // TODO: get rid of Nils?
 	Progress  *float64       `json:"progress"`
 }
 
diff --git a/internal/model/game/ship.go b/internal/model/game/ship.go
index 860c249..5699f69 100644
--- a/internal/model/game/ship.go
+++ b/internal/model/game/ship.go
@@ -71,6 +71,7 @@ func (st ShipType) EmptyMass() float64 {
 }
 
 // ProductionCost returns Material (MAT) and Population (POP) to produce this [ShipType]
+// TODO: do we need this?
 func (st ShipType) ProductionCost() (mat float64, pop float64) {
 	mat = st.EmptyMass()
 	pop = mat * 10